| Geant4 Cross Reference |
1 // 1
2 // *******************************************
3 // * License and Disclaimer
4 // *
5 // * The Geant4 software is copyright of th
6 // * the Geant4 Collaboration. It is provided
7 // * conditions of the Geant4 Software License
8 // * LICENSE and available at http://cern.ch/
9 // * include a list of copyright holders.
10 // *
11 // * Neither the authors of this software syst
12 // * institutes,nor the agencies providing fin
13 // * work make any representation or warran
14 // * regarding this software system or assum
15 // * use. Please see the license in the file
16 // * for the full disclaimer and the limitatio
17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
20 // * By using, copying, modifying or distri
21 // * any work based on the software) you ag
22 // * use in resulting scientific publicati
23 // * acceptance of all terms of the Geant4 Sof
24 // *******************************************
25 //
26 //
27 // -------------------------------------------
28 //
29 // GEANT4 Class file
30 //
31 //
32 // File name: G4VMscModel
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 07.03.2008
37 //
38 // Modifications:
39 //
40 //
41 // Class Description:
42 //
43 // General interface to msc models
44
45 // -------------------------------------------
46 //
47
48 #include "G4VMscModel.hh"
49 #include "G4SystemOfUnits.hh"
50 #include "G4ParticleChangeForMSC.hh"
51 #include "G4TransportationManager.hh"
52 #include "G4LossTableManager.hh"
53 #include "G4LossTableBuilder.hh"
54 #include "G4EmParameters.hh"
55
56 //....oooOO0OOooo........oooOO0OOooo........oo
57 //....oooOO0OOooo........oooOO0OOooo........oo
58
59 G4VMscModel::G4VMscModel(const G4String& nam):
60 G4VEmModel(nam),
61 lambdalimit(1.*CLHEP::mm),
62 geomMin(1.e-6*CLHEP::mm),
63 geomMax(1.e50*CLHEP::mm),
64 fDisplacement(0.,0.,0.),
65 steppingAlgorithm(fUseSafety)
66 {
67 dedx = 2.0*CLHEP::MeV*CLHEP::cm2/CLHEP::g;
68 }
69
70 //....oooOO0OOooo........oooOO0OOooo........oo
71
72 G4VMscModel::~G4VMscModel() = default;
73
74 //....oooOO0OOooo........oooOO0OOooo........oo
75
76 G4ParticleChangeForMSC*
77 G4VMscModel::GetParticleChangeForMSC(const G4P
78 {
79 // recomputed for each new run
80 if(nullptr == safetyHelper) {
81 safetyHelper = G4TransportationManager::Ge
82 ->GetSafetyHelper();
83 safetyHelper->InitialiseHelper();
84 }
85 G4ParticleChangeForMSC* change = nullptr;
86 if (nullptr != pParticleChange) {
87 change = static_cast<G4ParticleChangeForMS
88 } else {
89 change = new G4ParticleChangeForMSC();
90 }
91 return change;
92 }
93
94 //....oooOO0OOooo........oooOO0OOooo........oo
95
96 void G4VMscModel::InitialiseParameters(const G
97 {
98 if(IsLocked()) { return; }
99 G4EmParameters* param = G4EmParameters::Inst
100 if(std::abs(part->GetPDGEncoding()) == 11) {
101 steppingAlgorithm = param->MscStepLimitTyp
102 facrange = param->MscRangeFactor();
103 latDisplasment = param->LateralDisplacemen
104 } else {
105 steppingAlgorithm = param->MscMuHadStepLim
106 facrange = param->MscMuHadRangeFactor();
107 latDisplasment = param->MuHadLateralDispla
108 }
109 skin = param->MscSkin();
110 facgeom = param->MscGeomFactor();
111 facsafety = param->MscSafetyFactor();
112 lambdalimit = param->MscLambdaLimit();
113 }
114
115 //....oooOO0OOooo........oooOO0OOooo........oo
116
117 void G4VMscModel::DumpParameters(std::ostream&
118 {
119 G4String alg = "UseSafety";
120 if (steppingAlgorithm == fUseDistanceToBound
121 else if (steppingAlgorithm == fMinimal) alg
122 else if (steppingAlgorithm == fUseSafetyPlus
123
124 out << std::setw(18) << "StepLim=" << alg <<
125 << " Gfact=" << facgeom << " Sfact=" <<
126 << " Skin=" << skin << " Llim=" << lambd
127 }
128
129 //....oooOO0OOooo........oooOO0OOooo........oo
130
131 void G4VMscModel::SampleSecondaries(std::vecto
132 const G4Ma
133 const G4Dy
134 G4double,
135 {}
136
137 //....oooOO0OOooo........oooOO0OOooo........oo
138
139 G4double G4VMscModel::GetDEDX(const G4Particle
140 const G4Material
141 {
142 G4double x;
143 if (nullptr != ionisation) {
144 x = ionisation->GetDEDX(kinEnergy, couple)
145 } else {
146 const G4double q = part->GetPDGCharge()*in
147 x = dedx*q*q;
148 }
149 return x;
150 }
151
152 //....oooOO0OOooo........oooOO0OOooo........oo
153
154 G4double G4VMscModel::GetDEDX(const G4Particle
155 const G4Material
156 {
157 G4double x;
158 if (nullptr != ionisation) {
159 x = ionisation->GetDEDX(kinEnergy, couple,
160 } else {
161 const G4double q = part->GetPDGCharge()*in
162 x = dedx*q*q;
163 }
164 return x;
165 }
166
167 //....oooOO0OOooo........oooOO0OOooo........oo
168
169 G4double G4VMscModel::GetRange(const G4Particl
170 const G4Materia
171 {
172 // << ionisation << " " << part->GetPartic
173 localtkin = kinEnergy;
174 if (nullptr != ionisation) {
175 localrange = ionisation->GetRange(kinEnerg
176 } else {
177 const G4double q = part->GetPDGCharge()*in
178 localrange = kinEnergy/(dedx*q*q*couple->G
179 }
180 //G4cout << "R(mm)= " << localrange << " "
181 return localrange;
182 }
183
184 //....oooOO0OOooo........oooOO0OOooo........oo
185
186 G4double G4VMscModel::GetRange(const G4Particl
187 const G4Materia
188 {
189 //G4cout << "G4VMscModel::GetRange E(MeV)= "
190 // << ionisation << " " << part->GetPartic
191 localtkin = kinEnergy;
192 if (nullptr != ionisation) {
193 localrange = ionisation->GetRange(kinEnerg
194 } else {
195 const G4double q = part->GetPDGCharge()*in
196 localrange = kinEnergy/(dedx*q*q*couple->G
197 }
198 //G4cout << "R(mm)= " << localrange << " "
199 return localrange;
200 }
201
202 //....oooOO0OOooo........oooOO0OOooo........oo
203
204 G4double G4VMscModel::GetEnergy(const G4Partic
205 G4double range
206 {
207 G4double e;
208 //G4cout << "G4VMscModel::GetEnergy R(mm)= "
209 // << " Rlocal(mm)= " << localrange <<
210 if(nullptr != ionisation) { e = ionisation->
211 else {
212 e = localtkin;
213 if(localrange > range) {
214 G4double q = part->GetPDGCharge()*invepl
215 e -= (localrange - range)*dedx*q*q*coupl
216 }
217 }
218 return e;
219 }
220
221 //....oooOO0OOooo........oooOO0OOooo........oo
222